RENNtech | ECU+ Upgrade | C63 /S AMG | Coupe | C205 | 601 HP / 657 LB-FT | 4.0L BiTurbo V8 | M177 | MY2017-2023 performance-part Rated by RENNtech: 670 HP

Rated by RENNtech:              670 HP @ 5

The maximum power number reached with the RENNtech ECU Upgrade for the GT 63 AMG S 4-Door Coupe is 783 HP and 798 LB-FT

217 - S 63 AMG Coupé BiTurbo

738 LB-FT @ 2000-3000 RPM

With the proprietary RENNtech ECU Plus Upgrade the W166 - GLE AMG SUV gains up to +41 HP and +62 LB-FT

RENNtech | ECU+ Upgrade | C63 /S AMG | Coupe | C205 | 601 HP / 657 LB-FT | 4.0L BiTurbo V8 | M177 | MY2017-2023 performance-part Rated by RENNtech: 670 HPECU+ Upgrade 601HP 657TQ Gains: +56HP +107TQ RENNtech tuning products are certified to meet CARB standards in all 50 States. RENNtech HHT (hand held tuner) allows you the unlimited ability to switch between tuned and stock ECU programming and requires no ECU removal! Our proprietary tuning module stores both the RENNtech tuned file and your vehicles stock file. The module plugs directly into the OBD2 port and delivers the file you choose directly to